Plate valve



Dec. 11, 1928. 1,695,069

' G. G. TUTTVLE PLATE VALVE Filed Oct. 14, 1925 2 Sheets-Sheet 1 r1 I I gm 0 via 44 011 aruz e.

INVENTOR ms ATTNEY a. G. TUTTLE PLATE VALVE Filed'O t. 14, 1925 2 Sheets-Sheet 2 ggrggg wl'zgn %%L:'inuu B v G /egg zzliqa Hi5 ATTONEYI.

Patented Dec. 11, 1928.

UNITED" STATES.

,v r 1,695,069 PATENTOFFICE;

I GROVER G. TUTTLE, OF PHTLLIPSBURG, NEW JERSEY, ASSIGNOR ,10 INGERSOLL-RAND COMPANY, OF JERSEY CITY, NEWJERSEY, A CORPORATION OF NEW JERSEY.

PLATE VALVE;

This invention relates to plate valves, but more particularly to a plate valve of the type in which a valve plate reciprocates between the valve seat and a stop plate and is returned to its seat by suitable springs.

The objects of the invention are to eliminate friction of the valve parts during the operation of the valve, prevent breakage of the spring guide plate and guide arms, construct an efficient and simple valve having a small number of parts which may be easily and inexpensively manufactured and provide maximum port area together with a minimum lift of the valve plate.

Other objects will appear hereinafter. The invention consists of the combinations of elements, features of construction and arrangement of parts having the general mode of operation substantially as hereinafter described and more particularly pointed out in the appended claims and illustrated in the accompanying drawings, in which f Figure 1 is a transverse sectional elevation of a plate valve assembly,

Figure 2 is a perspective view, of the valve late I 1 v p Figure 3 is aperspective view partly in transverse section of a preferredform of spring guide plate,

Figure 4s 1s a s milar view of a modified form of spring guide plate, a

Figure 5 is a transverse sectional elevation of a valve assembly showing a modified form of valve construction, I v

Figure 6 is a detail perspective view partly in transverse section of a guide: plate shown in Figure 5, I v v e Figure 7 is a transverse sectional view of a modified form of plate valve construction, Figure S isa perspective view of a valve guide used in connection with the structure illustrated in Figure 7 and s Figure 9 illustrates another modification of the inventionin transverse sectional elevation. H v e Referring to the drawings and more particularly to the preferred modification illus rated in Figure 1, a multi-ported valve seat A is shown having ports B anda peripheral 56 flange 0 which is adapted to cooperate with a seat'for'med in a compressor or other similar machine employing valvesof this type. The valves areillustrated' in the drawings as dis- I charge valves although said valves may also be used as inlet valves if seated in inverted position. Arranged on I the face D of the valve seat A is an annular fiat valve plate E- of thin sheet metal having a central aperture is provided with a flange L at its outer edge,

said flange extendinglongitudinally of the 7 guide plate to snugly engage the outer edge of the valve plate E and thus prevent any relative transverse-movement between said valveplate E and said valve guide K, In this instance the spring guide plate K also has a solid cylindrical outer portion Oof substantially the same width as the corresponding portion H of the valve plate E and has a pair ofv semi-circular fiexible arms P corresponding in width and diameter with the circular portion J ofthe ,valve plate El.

The arms]? are preferably so formed that one endthereof; is, connected with a central solid annular portionor hub Q, of the, guide a plate K and the other end of said arms is connected to the outer portion O. This may be accomplished in a simple manner by formdiagonal slots B through diametrically opposed. arms S which connect the various portions of the valve guide.

To the end that the hub Q, of the'spring guide plate K maybe properly spaced from the face'D, ofthe valve seat A, 'a spacing washer T is interposed between said hub and v the face D. e The spacing washer T ispreferably of slightly greater thickness than the valve plate E so that whenthe parts are assembled the washer will raise the hub R and the flexible arms P slightly above the outer provided in the present instance and is held in spaced relation with respect to the valve plate E by means of a washer IV interposed between said stop plate and the hub Q of the guide plate K. The valve seat A, the washers T and WV, the guide plate K and the stop plate V are each provided with a hole X through which extends a bolt Y for holding said parts against relative transverse movement and a nut Z screwed on the end of the bolt Y serves to clamp the valve parts firmly in position.

In order to return the valve plate E to its seat after said plate has been lifted therefrom for the admission or discharge of air to or from the ports B, as the case may be, a plurality of springs 7) are arranged about the cylindrical portion 0 and extends into apertures or recesses 0 formed in the stop plate V whereby said springs are held against displacement. The springs Z) may be of a light tension type since their only function is to return the valve plate E to its seat and, unlike springs frequently used in valves of this type, are not required to overcome-triction of the valve parts.

The advantages of this invention reside chiefly in the fact that friction, which is usually present in plate valves of this type has been entirely eliminated. The spring device for returning the valve to its seat may be under a light tension. Maximum flexibility is provided in the movable members of the guide plate. Adequateport area for all requirements may be obtained by means of this construction and the parts comprisin the valve may be easily and cheaply manu actured and readily assembled or disassembled.

In the modification illustrated in Figure 4, the guide plate (5 is provided with an inner flange e and an outer flange f. In this instance buttons or seats 9 are conveniently formed on arms h to provide a seat for the springs b, said buttons being of suitable diameter to-extend into said springs.

In order to insure adequate spring means a plurality'of spring fingers of substantial length are formed near the outer flange of the guide plate (Z and are bent to incline from their supported end so that when the valve guide is clamped in position, said spring fingers will be constantly under a light tension. If desired, the free end of the spring finger may be bentat an angle to said fingers to form hooks k. The hooks thus formed may cooperate with suitable slots formed in the stop plate to prevent rotativemovement of the guide plate (Z with respect to the other valve parts. The guide plate d is also ported as at 0 to provide a free path for the admission or exhaust of air to and from the valve. By providing the guide plate (Z with the inner flange e and with the outer flange f, separating ring valves may be employed instead of the type of valve shown in Figure 2, since by means of these flanges both valves would be properly gulded against transverse movement.

In the modification shown in Figures 5 and 6, a guide plate 10 shown having an innerdepending flange q and an outer de pending flange 7 to cooperate with the inner and outer edges of a valve plate 3. The guide plate p is also provided with flexible arms P which connect the hub Q with an outer fiat circular portion t. The flexible arms P are of sutlicient lengthto permit free reciprocation of the valve plate 8 together withthe circular portion t of the guide plate 3). The valve plate in this instance is returned to its seat only by the coil springs b. The guide plate is preferably provided with the buttons or seats 9 which serve to guide one end of the springs b. In this instance only a single port B is shown in the valve seat A and the valve plate a in the form of a single ring but it obvious that the valve guide 1) may readily be so formed as to accommodate a series of valveplate rings, and it is to be understood that the invention is not limited to the construction shown in the drawings lathe modification shown in Figures 7 and 8, the valve seat a is provided withthe ports .8 and has a plurality of holes '0 near its outer edge to receive bolts w. In this instance a valve stop m having lugs y through which the bolts w extend is spaced from the valve seat u by means of suitable spacing washers a through which the bolts 10 extend. The valve stopw has a central opening 02 to provide for the admission or exhaust of air therethrough. In this instance a circular valve plate 3 controls the port B and is guided by a guide plate 4. The guide plate thas a central aperture 20f approximately the same area as the aperture 00 in the valve stop a: and has an inner depending flange 5 which cooperates with the inner edge of the valve plate 3. If desired, a pair of diametrically opposed outer depending flanges 6 may also be formed in the guide plate t to cooperate with the outer edge of the valve plate 3.

In order to augment the force of the springs 12 so that efiicient functioning of the valve plate 3 may at all times be insured,- sprin fingers 7 of semi-circular shape are forme on the guide plate 4 and are bent to incline toward the valve stop as. Hooks 8 formed on the free ends of the spring fingers 7 cooperate with suitable slots 9 in the valve stop for anchoring the guide plate and the valve plate against rotativemovement with respect to the other valve parts.

Referring now to the modification shown in Figure 9, a guide plate 10 is provided with a central hub 12 having an upwardly extending flange 13 which snugly engages a cylindrical hub 14 of a stop plate 15. The valve plate 3 is preferably held against lateral movement by inner and outer depending flanges 5 and 6. Flexible arms 16 connect the circular portion 17 of the valve guide 10 with washeras is shown in Figures 1 and 5, and

if so constructed the legs 18 may be eliminated.

I claim:

1. A plate valve comprising a valve seat, a valve plate adapted to seat on said valve seat, a stop plate for limiting the opening of the valve-plate, a guide plate having concentrically arrcnged annular solid portions, arms connecting said portions, said arms being flexible to permit relative longitudinal movement of the portions, a flange on the guide plate to engage an edge of the valve plate for guiding said valve plate, springs between the stop plate and the guide plate actuating the outer annular portions for pressing the specification. I

valve plate on the valve seat, and flexible means integral with the arms engaging the stop plate'for anchoring the guide plate to thestop plate.

2. A plate valve comprising a valve seat, a valve plate adapted to seat on said valve seat, a stop plate for limiting the opening of the valve plate, a guide plate having concentrically arranged annular solid portlons, curved arms between said portions and integral therewith, said arms being flexible to permit relative longitudinal movement of the por.

tions, a flange on the guide plate cooperating with an edge of the valve plate for holding the valve plate against transverse movement with respect to the guide plate, washers for holding the inner annular portion in spaced relation with respect to the stop plate and the valve seat, clamping means for holding the inner annular portionagainst longitudinalmovement, springs between the stop plate and the outer annular portion for actuating the valve plate in one direction, spring fingers carried by the guide plate, and hooks on the spring fingers engaging the stop plate to hold the guide plate against rotary movement with respect to the stop plate. a

In testimony whereof I have signed this eRovER e. TUTTLEI. y 

